package com.xxx.lease.web.admin.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.wf.captcha.SpecCaptcha;
import com.xxx.lease.common.constant.RedisConstant;
import com.xxx.lease.common.exception.LeaseException;
import com.xxx.lease.common.result.ResultCodeEnum;
import com.xxx.lease.common.utils.JwtUtil;
import com.xxx.lease.model.entity.SystemUser;
import com.xxx.lease.model.enums.BaseStatus;
import com.xxx.lease.web.admin.mapper.SystemUserMapper;
import com.xxx.lease.web.admin.service.LoginService;
import com.xxx.lease.web.admin.vo.login.CaptchaVo;
import com.xxx.lease.web.admin.vo.login.LoginVo;
import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {

    @Autowired
    private StringRedisTemplate stringRedisTemplate;
    @Autowired
    private SystemUserMapper systemUserMapper;

    @Override
    public CaptchaVo getCaptcha() {

        SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 4);

        specCaptcha.setCharType(SpecCaptcha.TYPE_DEFAULT);

        String code = specCaptcha.text().toLowerCase();

        String key = RedisConstant.ADMIN_LOGIN_PREFIX + UUID.randomUUID();

        String image = specCaptcha.toBase64();

        stringRedisTemplate.opsForValue().set(key, code, RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);

        return new CaptchaVo(image, key);
    }

    @Override
    public String login(LoginVo loginVo) throws LeaseException {
        //判断是否输入了验证码
        if(!StringUtils.hasText(loginVo.getCaptchaCode())){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
        }
        //校验验证码
        String code = stringRedisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        if (code == null){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }


        //校验用户是否存在
        SystemUser systemUser = systemUserMapper.selectOne(new LambdaQueryWrapper<SystemUser>().eq(SystemUser::getUsername, loginVo.getUsername()));
        if (systemUser == null){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }

        //校验用户是否被禁
        if (systemUser.getStatus() == BaseStatus.DISABLE){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }

        //校验用户密码
        if(!systemUser.getPassword().equals(DigestUtils.md5Hex(loginVo.getPassword()))){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }

        //创建并返回TOKEN

        return JwtUtil.createToken(systemUser.getId(), systemUser.getUsername());
    }
}
